static void Main(string[] args)
{
try
{
Console.WriteLine("输入数字1");
double num1 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("输入运算符");
string opr = Console.ReadLine();
Console.WriteLine("输入数字2");
double num2 = Convert.ToDouble(Console.ReadLine());
//简单工程模式
// Calculate cal = CalculateFactory.CreateOperate(opr);
//工厂模式
IoperateFactory opration = new IAddFactory();
Calculate cal = opration.CreateOperate();
cal.Num1 = num1;
cal.Num2 = num2;
double result = cal.GetResult();
Console.WriteLine(result);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadKey();
}
public static Calculate CreateOperate(string opr)
{
// Calculate cal = null;
IoperateFactory orpfactry = null;
switch (opr)
{
case "+":
//cal = new Add();
orpfactry = new IAddFactory();
break;
case "-":
//cal = new Sub();
orpfactry = new ISubFactory();
break;
case "*":
//cal = new Mul();
orpfactry = new IMulFactory();
break;
case "/":
//cal=new Div();
orpfactry = new IDivFactory();
break;
default:
throw new Exception("运算符不存在");
break;
}
//return cal;
return(orpfactry.CreateOperate());
}